James Tyson; Ann Tyson (1995). Chinese Awakenings: Life Stories from the Unofficial China. Westview Press. p. 123. ISBN0-8133-2473-4. Consultado el 28 de junio de 2010.(Note, the google book link has gone haywire, but you should still be directed to page 123 when you go to the link, where you should see the paragraph the reference is from)
University of Cambridge. Mongolia & Inner Asia Studies Unit (2002). Inner Asia, Volume 4, Issues 1-2. The White Horse Press for the Mongolia and Inner Asia Studies Unit at the University of Cambridge. p. 204. Consultado el 28 de junio de 2010.
Lipman, Jonathan N. (Jul 1984). «Ethnicity and Politics in Republican China: The Ma Family Warlords of Gansu». Sage Publications, Inc. p. 298. JSTOR189017.Falta la |url= (ayuda)
Lipman, Jonathan N. (Jul 1984). «Ethnicity and Politics in Republican China: The Ma Family Warlords of Gansu». Sage Publications, Inc. p. 308. JSTOR189017.Falta la |url= (ayuda)
